Palo Alto Investors LP

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Assets, Funds, Holdings

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Palo Alto Investors LP
CRD #109171
SEC #801-58166
CIK #0001306923, 0001012084
AUM $667.0 M (2025-03-31)
Employees 12 (42% Investors, 0% Brokers)
Phone650-325-0772
Address101 University Ave
Palo Alto, CA 94301-1638
Source [IAPD] [EDGAR] [Website]
Total AUM ($B)
3.02.41.81.20.60.02000200820172026
Sector Form 13F Holdings Value ($B)
Insmed Inc 0.1
Acadia Pharmaceuticals Inc 0.1
BioMarin Pharmaceutical Inc 0.0
Amicus Therapeutics Inc 0.0
United Therapeutics Corp 0.0
Biogen IDEC Inc 0.0
Alnylam Pharmaceuticals Inc 0.0
PTC Therapeutics Inc 0.0
Anaptysbio Inc 0.0
Novocure Ltd 0.0
View All
Holdings by Sector ($B)
3.02.41.81.20.60.02012201620212026
Type Form D Funds Date Sold ($M) AUM ($M)
HF Palo Alto PE Fund LP [2015-05-15] 1.0 3.0
HF Lagunita LP [2015-02-26] 285.8 203.0
HF Palo Alto Micro Cap Liquidating Fund LP [2014-04-11] 0.0 2.9
HF Micro Cap Partners LP 2012-03-30 52.0
HF Palo Alto Advanced Life Sciences Master Fund LP [2012-03-30] 167.3 98.0
HF Palo Alto Crossover Fund LP 2012-03-30 0.1
HF Palo Alto Energy Master Fund LP 2012-03-30 13.0
HF Palo Alto Fund II LP 2012-03-30 6.0
HF Palo Alto Global Energy Liquidating Fund LP [2012-03-30] 0.0 8.3
HF Palo Alto Healthcare Master Fund II LP [2012-03-30] 228.4 318.0
View All
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 0 0.0
(b) Individuals (high net worth individuals) 0 0.0
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 12 0.7
(g) Pension and profit sharing plans 0 0.0
(h) Charitable organizations 0 0.0
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 0 0.0
(n) Other 0 0.0
Total 12 0.7
By Discretionary
Discretionary 12 0.7
Non-Discretionary 0 0.0
Total 12 0.7
By Non-United States Persons
Non-United States Persons 0.1
United States Persons 0.6
Total 12 0.7
Limited Partners2011 - 2025
State Board of Administration of Florida
Teachers' Retirement Security for Illinois Educators
Form D Directors # Filings # Firms 2011 - 2025
Ronan Guilfoyle 355
Roger Hanson 255
John Ackerley 166
Cary Marr 114
Darren Stainrod 140
Jonathan Roney 94
Scott Smith 102
Mark Shamia 14
Patrick Lee 27
William Edwards 19
Palo Alto Investors LLC 16
Anthony Yun 16
PAI LLC 7
Palo Alto Investors LP 4
Palo Alto Investors 2
Palo Palo Alto Investors LLC 1
EDGAR Form CIK 2011 - 2025
3 [0001012084]
13F-HR [0001306923]
3 [0001306923]
4 [0001306923]
SC 13D [0001306923]
SC 13G [0001306923]
Form 13D/13G Filer Form 13D/13G Subject Filed
Palo Alto Investors LP Palo Alto Investors LP [2020-02-14]
Palo Alto Investors LP Aimmune Therapeutics Inc [2020-02-14]
Palo Alto Investors LLC Karyopharm Therapeutics Inc [2016-02-16]
Palo Alto Investors LLC Epizyme Inc [2016-02-16]
Palo Alto Investors LLC Sunesis Pharmaceuticals Inc [2016-02-16]
Palo Alto Investors LLC Clovis Oncology Inc [2015-02-18]
Palo Alto Investors LLC Insmed Inc [2015-02-18]
Palo Alto Investors LLC Staar Surgical Co [2015-02-18]
Palo Alto Investors LLC Clovis Oncology Inc [2015-02-18]
Palo Alto Investors LLC Celladon Corp [2015-02-18]
View All
Form 3/4/5 Subject 2011 - 2025
Palo Alto Investors LP
Alimera Sciences Inc
Palo Alto Healthcare Master Fund LP
Palo Alto Investors
Palo Alto Healthcare Fund LP
Palo Alto Healthcare Fund II L P
Comparable Firms State AUM ($B)
Virage Capital Management LP
TX 0.7
Goodhart Partners LLP
0.7
Bow Street LLC
NY 0.7
Standard General LP
NY 0.7
Sandglass Capital Advisors LLC
NY 0.7
Inclusive Capital Partners LP
CA 0.7
MYDA Advisors LLC
NY 0.7
Engaged Capital LLC
CA 0.7
Extract Advisors LLC
CA 0.7
GFO Asset Management LLC
FL 0.6
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